Indels and regulatory sites found in VRN1 promoter region. A. Schematic representation of the different VRN1 promoter variants observed in spring wheat accessions. Places of indels are marked in bp. numbers upstream from the start codon. Grey boxes indicate deletions and black triangles - insertions. One of the direct repeats flanked deletions that remain in sequence after recombination is outside the grey box. B. The predicted transcription factors binding sites.